Lanvin has found a minority investor to take a 12.5% stake, which it hopes will accelerate its expansion.
Lanvin said the deal would help to finance its long-term plans for global expansion but declined to reveal the identity of the investor.
Lanvin, which produces womenswear, menswear and accessories collections, currently has 40 standalone stores, of which 19 are company-run and 21 are franchises. It also has a number of wholesale stockists.
A source close to the deal told Reuters that the investor was a European family-held company, whose investment in Lanvin was likely to be a long-term venture.